Analysis
- max time kernel
149s - max time network
143s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
- submitted
10/07/2026, 17:28
General
- Target 红枫叶客户端 V3.1.exe
- Size 263KB
- Sample260710-v2ghwsdv7k
- SHA256 69d2c150f0ef77d79f14d0c4e3cc0aa68619aa13b767210afa2d5a4745969783
Malware Config
Extracted
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valleyrat_s2
-
1.0
-
103.119.3.160:40010
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127.0.0.1:8888
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127.0.0.1:80
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campaign_date
2026. 6.21
Signatures
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Detects ValleyRAT payload 4 IoCs
- Executes dropped EXE 4 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates connected drives 3 TTPs 22 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Drops file in Program Files directory 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 45 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS1⤵
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Users\Admin\AppData\Local\Temp\红枫叶客户端 V3.1.exe"C:\Users\Admin\AppData\Local\Temp\红枫叶客户端 V3.1.exe"2⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Program Files\output.exe"C:\Program Files\output.exe"3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kb_0e591052\runtimebroker.exe"C:\Users\Admin\AppData\Local\Temp\kb_0e591052\runtimebroker.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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-
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C:\Program Files\红枫叶客户端 V3.2.exe"C:\Program Files\红枫叶客户端 V3.2.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\kb_0e591052\runtimebroker.exeC:\Users\Admin\AppData\Local\Temp\kb_0e591052\runtimebroker.exe1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
output.exe
红枫叶客户端 V3.2.exe
1.txt
runtimebroker.exe
memory/3012-55-0x0000000003B30000-0x0000000003B96000-memory.dmp
memory/3012-44-0x00000000036F0000-0x00000000036F1000-memory.dmp
memory/3012-61-0x0000000003B30000-0x0000000003B96000-memory.dmp
memory/3012-60-0x0000000003B30000-0x0000000003B96000-memory.dmp
memory/3012-59-0x0000000006540000-0x0000000006582000-memory.dmp
memory/3012-58-0x0000000006540000-0x0000000006582000-memory.dmp
memory/3012-57-0x0000000006540000-0x0000000006582000-memory.dmp
memory/3012-56-0x0000000006540000-0x0000000006582000-memory.dmp
memory/3012-53-0x0000000003B30000-0x0000000003B96000-memory.dmp
memory/3012-54-0x0000000003B30000-0x0000000003B96000-memory.dmp
memory/3012-49-0x0000000003B30000-0x0000000003B96000-memory.dmp
memory/3012-50-0x0000000003B30000-0x0000000003B96000-memory.dmp
memory/3808-38-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-39-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-47-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-48-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-43-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-41-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-40-0x000002139F9D0000-0x000002139FEF8000-memory.dmp
memory/3808-46-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-62-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-27-0x00000213819C0000-0x0000021381BA8000-memory.dmp
memory/3808-26-0x00007FFA31B5F000-0x00007FFA31B60000-memory.dmp
memory/3808-33-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/3808-32-0x00007FFA319D0000-0x00007FFA32374000-memory.dmp
memory/4688-1-0x0000000000439000-0x000000000043A000-memory.dmp
memory/4688-24-0x0000000000400000-0x000000000043A000-memory.dmp
memory/4688-0-0x0000000000400000-0x000000000043A000-memory.dmp